Cooper Flagg leads the NBA in Player Efficiency Rating after the first week of the 2026-27 regular season with a mark of 37.3, ahead of Ty Jerome at 36.5. Devin Booker ranks third at 34.1, while Jalen Duren and Paul George round out the top-5.

NBA PER (Week 1)
1. Cooper Flagg: 37.3
2. Ty Jerome: 36.6
3. Devin Booker: 34.1
4. Jalen Duren: 30.1
5. Paul George: 29.9
6. Giannis Antetokounmpo: 28.2
7. Domantas Sabonis: 26.9
8. Damian Lillard: 26.7
9. Luka Doncic: 26.4
10. Dyson Daniels: 26.2
11. Austin Reaves: 26.1
12. Anthony Black: 26.1
13. Stephen Curry: 25.9
14. Paolo Banchero: 25.8
15. Tyrese Haliburton: 25.7
16. Jalen Johnson: 25.2
17. Ja Morant: 24.8
18. Walker Kessler: 24.8
19. Alex Caruso: 24.6
20. Kyrie Irving: 24.1